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Facing Reality About Life on Other Planets, 6: Chemistry and Probability

In this final segment about habitability of exoplanets, Dr Henry Richter looks at chemistry and probability.

Privileged Planet Confirmed!

All of the evidence we have now is that we live on a rare planet that is specially designed for intelligent life.

It’s Still a Rare Earth

Now that hundreds of extrasolar planets are known, how do they compare to ours? The Kepler spacecraft has found a varied assortment of all sizes and distances away from their parent stars. Only a few reside in their star’s habitable zones. But that’s only the first of many requirements for life. Two recent studies indicate that Earth remains a rare bird in the celestial aviary.
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